Articles | Volume 24, issue 4
https://doi.org/10.5194/acp-24-2195-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-2195-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Feb 2024
Research article |
| 21 Feb 2024
| 21 Feb 2024
Quantifying SO2 oxidation pathways to atmospheric sulfate using stable sulfur and oxygen isotopes: laboratory simulation and field observation
Ziyan Guo
State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Pengxiang Qiu
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CIC-AEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Mingyi Xu
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CIC-AEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Zhaobing Guo
CORRESPONDING AUTHOR
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CIC-AEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
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Cited
15 citations as recorded by crossref.
- Mechanisms driving altitude- and latitude-dependent air quality variations from high-altitude NOx emissions L. Oh et al. https://doi.org/10.1038/s41612-026-01324-9
- Resolving systematic errors in sulfate source apportionment: a field-validated kinetic isotope fractionation framework Z. Guo et al. https://doi.org/10.5194/acp-26-12231-2026
- Evaluating the Impact of Increased Heavy Oil Consumption on Urban Pollution Levels through Isotope (δ13C, δ34S, 14C) Composition L. Bučinskas et al. https://doi.org/10.3390/atmos15080883
- Process-informed machine learning for interpretable air-quality prediction in tropical coastal cities of Sulawesi, Indonesia A. Awaludin et al. https://doi.org/10.1016/j.atmosenv.2026.122207
- Chemical Dissection of PM2.5 in Cigarette Smoke: Main and Sidestream Emission Factors and Compositions Y. Zhou et al. https://doi.org/10.3390/toxics13090711
- Improving Satellite-Reanalysis Sulfate Aerosol Estimates over India Using Ground Measurements A. Tripathi et al. https://doi.org/10.1016/j.envpol.2026.129391
- H2O2-Driven Sulfate Formation at Air–Water Interfaces: Stepwise Mechanism and Accelerated Kinetics Y. Zhang et al. https://doi.org/10.1021/acs.est.5c17902
- Development of iron-mediated molecular chlorine chemistry in GEOS-Chem: model description, evaluation and global atmospheric implication J. Chen et al. https://doi.org/10.5194/acp-26-9809-2026
- Analysis of Pollution Characteristics and Contributions of Firework Burnings in Nanchang during the Spring Festival C. Kang et al. https://doi.org/10.1021/acsomega.4c03237
- Identifying the secondary process and sources of atmospheric sulfate using oxygen and sulfur stable isotopes in three inland cities, northern China H. Ma et al. https://doi.org/10.1016/j.atmosenv.2025.121310
- Assessing the impact of ship emissions on the atmospheric chemical composition in the Eastern Mediterranean and the Piraeus port (Greece) A. Poupkou et al. https://doi.org/10.1038/s41598-025-33968-7
- Strengthened H-bond networks compensate for entropy loss to facilitate NH3-assisted SO2 hydration in aqueous microdroplets F. Ding & W. Cen https://doi.org/10.1039/D6CP01957A
- Cloud and Aerosol Chemistry Together Explain the High Sulfate Aerosol Content in a Heavy Haze Episode in Central Eastern China X. Ruan et al. https://doi.org/10.1021/acs.est.5c07415
- Solid Products of SO2 Uptake on a Methane Flame Soot I. Sulimenkov et al. https://doi.org/10.1134/S1990793125701593
- Isotope-Guided Atmospheric Chemistry toward High Dimension: Lexicon, Methods, and Molecular Insights from High-Resolution Mass Spectrometry─A Critical Review Y. Chang et al. https://doi.org/10.1021/acs.estlett.6c00174
15 citations as recorded by crossref.
- Mechanisms driving altitude- and latitude-dependent air quality variations from high-altitude NOx emissions L. Oh et al. https://doi.org/10.1038/s41612-026-01324-9
- Resolving systematic errors in sulfate source apportionment: a field-validated kinetic isotope fractionation framework Z. Guo et al. https://doi.org/10.5194/acp-26-12231-2026
- Evaluating the Impact of Increased Heavy Oil Consumption on Urban Pollution Levels through Isotope (δ13C, δ34S, 14C) Composition L. Bučinskas et al. https://doi.org/10.3390/atmos15080883
- Process-informed machine learning for interpretable air-quality prediction in tropical coastal cities of Sulawesi, Indonesia A. Awaludin et al. https://doi.org/10.1016/j.atmosenv.2026.122207
- Chemical Dissection of PM2.5 in Cigarette Smoke: Main and Sidestream Emission Factors and Compositions Y. Zhou et al. https://doi.org/10.3390/toxics13090711
- Improving Satellite-Reanalysis Sulfate Aerosol Estimates over India Using Ground Measurements A. Tripathi et al. https://doi.org/10.1016/j.envpol.2026.129391
- H2O2-Driven Sulfate Formation at Air–Water Interfaces: Stepwise Mechanism and Accelerated Kinetics Y. Zhang et al. https://doi.org/10.1021/acs.est.5c17902
- Development of iron-mediated molecular chlorine chemistry in GEOS-Chem: model description, evaluation and global atmospheric implication J. Chen et al. https://doi.org/10.5194/acp-26-9809-2026
- Analysis of Pollution Characteristics and Contributions of Firework Burnings in Nanchang during the Spring Festival C. Kang et al. https://doi.org/10.1021/acsomega.4c03237
- Identifying the secondary process and sources of atmospheric sulfate using oxygen and sulfur stable isotopes in three inland cities, northern China H. Ma et al. https://doi.org/10.1016/j.atmosenv.2025.121310
- Assessing the impact of ship emissions on the atmospheric chemical composition in the Eastern Mediterranean and the Piraeus port (Greece) A. Poupkou et al. https://doi.org/10.1038/s41598-025-33968-7
- Strengthened H-bond networks compensate for entropy loss to facilitate NH3-assisted SO2 hydration in aqueous microdroplets F. Ding & W. Cen https://doi.org/10.1039/D6CP01957A
- Cloud and Aerosol Chemistry Together Explain the High Sulfate Aerosol Content in a Heavy Haze Episode in Central Eastern China X. Ruan et al. https://doi.org/10.1021/acs.est.5c07415
- Solid Products of SO2 Uptake on a Methane Flame Soot I. Sulimenkov et al. https://doi.org/10.1134/S1990793125701593
- Isotope-Guided Atmospheric Chemistry toward High Dimension: Lexicon, Methods, and Molecular Insights from High-Resolution Mass Spectrometry─A Critical Review Y. Chang et al. https://doi.org/10.1021/acs.estlett.6c00174
Saved (final revised paper)
Latest update: 26 Oct 2026
Short summary
The formation of secondary sulfate needs to be further explored. In this work, we simultaneously measured sulfur and oxygen isotopic compositions to gain an increased understanding of specific sulfate formation processes. The results indicated that secondary sulfate was mainly ascribed to SO2 homogeneous oxidation by OH radicals and heterogeneous oxidation by H2O2 and Fe3+ / O2. This study is favourable for deeply investigating the sulfur cycle in the atmosphere.
The formation of secondary sulfate needs to be further explored. In this work, we simultaneously...
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